This preview shows page 1. Sign up to view the full content.
Unformatted text preview: X and Y is given by f ( x;y ) = & 2 5 (2 x + 3 y ) ; ± x;y ± 1 ; otherwise : Find (a) E ( X ) and E ( Y ) ; (b) V ar ( X ) and V ar ( Y ) ; (c) Cov ( X; Y ) . 5. Let X be a random variable that is uniformly distributed on the interval [-1,1]. Find (a) E ( X ) ; (b) E ( X 2 ) ; (c) V ar ( X 2 ) ; (d) E ( j X j ) : 1...
View Full Document
This note was uploaded on 10/19/2008 for the course ECON 3190 taught by Professor Hong during the Fall '07 term at Cornell.
- Fall '07